关键词: 基音检测, 功率谱二次处理, 倒谱法和基音轨迹

Abstract: The cepstrum method of speech pitch detection was analyzed carefully, and several shortcomings were pointed out when the method was realized digitally. In order to overcome these shortcomings, a pitch detection algorithm based on digital spectral analysis was presented. It used the power spectrum reprocessing results of speech to extract the pitch contour. The presented method not only overcame the shortcomings of cepstrum method, but also improved the computational speed and the accuracy of the estimated pitch contour.

Key words: pitch detection, power spectrum reprocessing, cepstrum method and pitch contour